CD274 and neoplasm: These evaluation scores are considered identical in practice and are usually classified into cut-off groups depending on the clone used and the tumor to be evaluated (e.g., for lung tumors, TPS < 1%, no PD-L1 expression, TPS 1–49%, low PD-L1 expression, TPS ≥ 50%, high PD-L1 expression or IC 0: < 1%, IC 1: 1–4%, IC 2: 5–9%, IC 3: >10%) [21,23,24].